Infostealer.Wowcraft.D

1. Copies itself as the following files:
   
   
   • %Windir%\winlogon.exe
   • %System%\rundll32.com
   • %System%\finder.com
   • %Windir%\finder.com
   • %System%\command.pif
   • %ProgramFiles%\Internet Explorer\iexplore.com
   • %CommonProgramFiles%\iexplore.pif
   • %Windir%\1.com
   • %Windir%\ExERoute.exe
   • %System%\MSCONFIG.COM
   • %System%\dxdiag.com
   • %System%\regedit.com
   • %Windir%\Debug\DebugProgram.exe
   • %Windir%\explorer.com
     
     Note:
   • %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
   • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows (Windows 95/98/Me/XP) or C:\Winnt (Windows NT/2000).
   • %ProgramFiles% is a variable that refers to the program files folder. By default, this is C:\Program Files.
     %CommonProgramFiles% is a variable that refers to the Common Files folder. By default, this is C:\Program Files\Common Files.
     
     
2. Copies itself as pagefile.pif in the root folder of all drives from the D drive onwards. The threat also creates the file autorun.inf in the root folder of all drives from the D drive onwards. This file points to pagefile.pif.
   
   
3. Adds the following value:
   
   "Torjan Program" = "%Windir%\winlogon.exe"
   
   to the registry subkey:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Run
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\RunServices
   
   so that the Trojan runs every time Windows starts.
   
   
4. Adds the following value:
   
   "(default)" = "%Windir%\ExERoute.exe %1 %*"
   
   to the registry subkey:
   
   HKEY_CLASSES_ROOT\winfiles\open\command
   
   
5. Adds the following value:
   
   "(default)" = "winfiles"
   
   to the registry subkey:
   
   HKEY_CLASSES_ROOT\.exe
   
   
6. Adds the following value:
   
   "(default)" = "%1"
   
   to the registry subkey:
   
   HKEY_CLASSES_ROOT\winfiles\defaulticon
   
7. Modifies one of the following values:
   
   "Command" = "%System%\rundll32.com syncui.dll,Briefcase_Create %1!d! %2"
   "Command" = "%System%\rundll32.com %System%\syncui.dll,Briefcase_Create %2!d! %1"
   
   in one of the following registry subkeys:
   
   HKEY_CLASSES_ROOT\.bfc\ShellNew
   HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.bfc\ShellNew
   
   
8. Modifies the value:
   
   "Command" = "%System%\rundll32.com appwiz.cpl,NewLinkHere %1"
   
   in the registry subkey:
   
   HKEY_CLASSES_ROOT\.lnk\ShellNew
   
   
9. Modifies the following value:
   
   "(default)" = "rundll32.com shell32.dll,Control_RunDLL %1,%*"
   
   to the registry subkey:
   
   HKEY_CLASSES_ROOT\cplfile\shell\cplopen\command
   
   
10. Modifies the following value:
    
    "(default)" = "%system%\rundll32.com NETSHELL.DLL,InvokeDunFile %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\dunfile\shell\open\command
    
    
11. Modifies the value:
    
    "(default)" = ""%CommonProgramFiles%\Internet Explorer\iexplore.com" -nohome"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\htmlfile\shell\open\command
    
    
12. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\iexplore.pif" %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\htmlfile\shell\opennew\command
    
    
13. Modifies the following value:
    
    "(default)" = "rundll32.com %System%\mshtml.dll,PrintHTML "%1""
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\htmlfile\shell\print\command
    
    
14. Modifies the following value:
    
    "(default)" = "%System%\rundll32.com setupapi,InstallHinfSection DefaultInstall 132 %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\inffile\shell\Install\command
    
    
15. Modifies the following value:
    
    "(default)" = "finder.com shdocvw.dll,OpenURL %l"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\InternetShortcut\shell\open\command
    
    
16. Modifies the following value:
    
    "(default)" = "finder.com desk.cpl,InstallScreenSaver %l"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\scrfile\shell\install\command
    
    
17. Modifies the following value:
    
    "(default)" = ""%System%\finder.com" %System%\scrobj.dll,GenerateTypeLib "%1""
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\scriptletfile\Shell\Generate Typelib\command
    
    
18. Modifies the following value:
    
    "(default)" = "finder.com url.dll,TelnetProtocolHandler %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\telnet\shell\open\command
    
    
19. Modifies the following value:
    
    "(default)" = "%System%\finder.com %System%\shell32.dll,OpenAs_RunDLL %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\Unknown\shell\openas\command
    
    
20. Modifies the following value:
    
    "(default)" = "%system%\rundll32.com NETSHELL.DLL,InvokeDunFile %1"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\dunfile\shell\open\command
    
    
21. Modifies the following value:
    
    "(default)" = "finder.com shdocvw.dll,OpenURL %l"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\InternetShortcut\shell\open\command
    
    
22. Modifies the following value:
    
    "(default)" = "finder.com desk.cpl,InstallScreenSaver %l"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\scrfile\shell\install\command
    
    
23. Modifies the following value:
    
    "(default)" = "%System%\finder.com %System%\shell32.dll,OpenAs_RunDLL %1"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Unknown\shell\openas\command
    
    
24. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\Internet Explorer\iexplore.com" -nohome"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\htmlfile\shell\open\command
    
    
25. Modifies the following value:
    
    "Check_Associations" = "No"
    
    to the registry subkey:
    
    HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
    
    
26. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\Internet Explorer\iexplore.com" %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\Applications\iexplore.exe\shell\open\command
    
    
27. Modifies the following value:
    
    "(Default)" = "%ProgramFiles%\Internet Explorer\iexplore.com"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}
    \shell\OpenHomePage\Command
    
    
28. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\Internet Explorer\iexplore.com" %1"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\ftp\shell\open\command
    
    
29. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\iexplore.pif" -nohome"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\http\shell\opennew\command
    
    
30. Modifies the following value:
    
    "(default)" = ""%CommonProgramFiles%\iexplore.pif" -nohome"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Classes\http\shell\opennew\command
    
    
31. Modifies the following value:
    
    "(default)" = "%Windir%\explorer.com"
    
    to the registry subkey:
    
    HKEY_CLASSES_ROOT\Drive\shell\find\command
    
    
32. Modifies the following value:
    
    "Shell" = "Explorer.exe 1"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
    
    
33. Attempts to log keystrokes entered into windows associated with the following domains, which belong to World of Warcraft, a popular multiplayer online game:
    
    
    • us.logon.worldofwarcraft.com
    • eu.logon.worldofwarcraft.com
      
      
34. Steals various passwords related to another multiplayer online game called The Legend of Mir.
    
    
35. Sends any information it gathers to a remote attacker via HTTP.
    
    
36. Ends processes, some of which may be security-related, that contain the following strings in the process name:
    
    
    • RAVMON.EXE
    • TROJDIE
    • KPOP
    • CCENTER
    • ASSISTSE
    • KPFW
    • AGENTSVR
    • KV
    • KREG
    • IEFIND
    • IPARMOR
    • SVI.EXE
    • UPHC
    • RULEWIZE
    • FYGT
    • RFWSRV
    • RFWMA

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
• Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
• Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
• Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
• If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
• If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
• For further information on the terms used in this document, please refer to the Security Response glossary.